Paper-bag machine



(No Model.) 4 Sheets-Sheet 1.

W. A. LORENZ & W. H. HONISS. PAPER BAG MACHINE.

D No. 337,964. Patented Mar. 16, 1886.

N. PETERS, Pmmuum m nw, Washinglnn. n. c.

(No Model.) 4 Sheets-Sheet 2.

W. A. LORENZ & W. H. HONISS. PAPER BAG MAOHINE.

No. 337,964. Patented Mar. 16, 1886.

N. PETERS PhOln-Lilhogmpher. Washington D. c.

(No Model.) 4 Sheet sSheet 3. W. A. LORENZ & W. H. HONISS.

PAPER BAG MACHINE.

No. 337,964. Patented Mar. 16, 1886.

N. PETERS, Phawum a n w. Waihinglcn. n. c.

(No Model.) 4 SheetsSheet 4.

W. A. LORENZ 81; W. H. HONISS.

PAPER BAG MACHINE Patented Mar. 16, 1886.

Fly. 9

mmessea:

Inventors: WM %Zaw m UNITED STATES PATENT Orrrcn.

WILLIAM A. LORENZ AND WILLIAM H. HONISS, OF HARTFORD, CONNECTI- CUT,ASSIGNORS TO FELIX W. LEINBAOH AND CLARENCE A. WOLLE, OF

BETHLEHEM, PENNSYLVANIA.

PAPER-BAG MACHINE.

SPECIFICATION forming part of Letters Patent No. 337,964, dated March16, 1886.

Application filed Fehruaryfl i, 1885. Serial No.156,865. (No model.)

To all whom it may concern.-

Be it known that we, WILLIAM A. LORENZ and WILLIAM H. HoNIss, ofHartford, Connecticut, have invented certain new and useful Improvementsin Paper-Bag Machines, of which the following description and claimsconstitute the specification, and which are illustrated by theaccompanying four sheets of drawings.

This mechanism opens out one end of a tuckedpaper tube into the box likeform shown in Figure 7 of the accompanying drawings, and issubstantially different from the mechanism which performs that functionin the machine set forth in our application of May15, 1884, for LettersPatent for a new and useful paper-bag machine, and is suitable to takethe place of that mechanism on that machine, such box-like form beingone of the forms assumed by the material when being manufactured by thatmachine into a squarebottom paper bag.

Fig. 1 ot the drawings is a side view of our present invention. Fig. 2is a plan view of the same. Fig. 3 isa cross-section looking to the lefton the line a a of Figs. 1 and 2. Fig. 4 is a cross-section of thetucked paper tube and a view of the tips of the grippers 44 44 and 4949, adjacent thereto. Fig. 5 is a side view of part of the foldingmechanism when doing its work, and Fig. 6 is a View of the same when itswork is done. Fig. 7 is a perspective view of a piece of tucked papertubing of suitable proportions for one squarebottom paper bag,with oneof itsends opened out, as by this machine, into a box-like formpreparatory to being folded down into a diamond shape, and thence intothe form of a complete square bag-bottom. Fig. 8 is a side View of theworking-points of the folder mechanism when about to grip the bag-blank,and Fig. 9 is a siniilarview after they havegripped the blank and partlyopened it out, while Fig. 10 is a view of the same after the box-likeform is completed and is about to be released from the grippers.

The numeral 1 in Figs. 1 and 2 indicates the forward end of the formerof the machine shown in our application of May 15, 1884,

while 2 indicates the tucked-paper tubing being drawn from that formerinto that part of the machine shown in this application. The loosepulley 3 and the fixed pulley 4 revolve on the stud 5, and are driven bythe belt 6 in the direction indicated by the arrows in Fig. 1. The gear7 is secured to the hub of the pulley 4, and meshes with the gears8 and9, keyed to the shafts 10 and 11, respectively. The gears 8 and 9respectively mesh with the gears 12 and 13, which latter gears are re-66 spectively keyed to the shafts 14 and 15. These shafts are journaledin boxes, adjustable by set-screws and springs. The drawing-rolls 16 and17 are respectively keyed to the shafts 10 and 14, and the cutting- 6rolls 18 and 19 are keyed to the shafts 10 and 15, respectively. One ofthe cutting-rolls is provided with a knife, which severs a baglengthfrom the paper tubing at each revolution of those rolls, and the othercuttingroll is provided with a rubber pad, against which that knifeoperates. The crank 20 is attached to the shaft 10, and works theconnecting-rod 21, which rod is pivoted to the carriage 22,reciprocating on the ways 23 and 24. The presser-plate 25 is rigidlyattached by its arms 26 and 26 to the shaft 28, and is held down uponthe top of the carriage by the spring 27, attached to the arm 26, and bya corresponding spring attached to the arm 26. To the middle of theshaft 28 the arm 29 is rigidly fixed. The roller 30 is pivoted to oneside of the end of that arm, and is operated upon by the inclined planes31 and 31, and by the cam 32, in the manner hereinafter set forth. Thecam 32 is fixed to the side of the arm 33, and that arm is pivoted tothe standard 34, and is supported by the spring 35. The arms 36 and 37are keyed to the shaft 38, and respectively work the rods 39 and 40, and0 are worked by the cam 41, keyed to the shaft 15, and provided with thecam-groove 42. In that groove a roller runs, and is pivoted to the upperend of the arm 36, and thus works that aim, and, through the rock-shaft38, also 5 works the arm 37. The rods 39 and 40 are respectively fixedto the heads 43 and 43, which heads belong, respectively, to the left inthe carriage 22. a roller pivoted to its lower end, and adapted foldingmechanism. by the'dog 46, keyed thereto, and that dog is alternatelyworked by the hook -springs 47 and 48. The upper gripper, 49, is a leverhand and the right hand box-folding mechanism. Asthose two mechanismsare in all respects counterparts of each other, we will here describeonly the left-hand mechanism.

The left-hand box-folding mechanism consists of asystem of devicesoperating the lower gripper, and of another system of devices op-.-erating the upper gripper, and of those two grippers operatingtogether upon the paper tubing. The lower gripper, 44, is a leverpivoted to the side of the carriage 22, so as to work crosswise thereof,and having a projection on its upper end beveled vertically at itsextremity at an angle of forty-five degrees, as shown in Fig. 7,and-adapted to press downward upon the adjacent border of the top of thecarriage. The gripper 44 also has an angular projection just below theline of its fulcrum, adapted to be pressed by the presser-bolt44'*,worked by aspiral spring, 44", in a chamber The gripper 44 also hasto run in a cam-groove in the periphery of the cam 45 on the shaft 45".That shaft also carries the corresponding cam, 45, which Works the lowergripper, 44, of the, right-hand box- The shaft 45? is worked pivoted tothe head 43, and having at its work- .ing extremity a projection adaptedto press against the adjacent beveled lower angle of .the inner end ofthe head 43. Between its working end and its fulcrum the gripper 49 isattached to the lower end of the spring 50, .the-npper end of which issupported by the bracket 51, fixed to the head 43. The outer end of thegripper49 is provided with aroller, 52, adapted to run upon the upperedge of the fixed rail 53. The arm 54 is journaled at distance beingprecisely half of the distance across the bag-bottom to be formed.

The mode of operation of this invention is as follows: The tucked-papertubing is drawn into the machine and the end of it is thrust forwardupon the carriage 22 by the drawingrolls and the cutting-rolls when thecarriage is beginning its backward stroke with the presser-plateelevated to its dotted position in Fig. 1 by means of the roller 30,passing backward under the cam 32. When the crank 20 reaches a positionninety degrees back of that shown in Fig. 1, the roller 30 is releasedfrom the cam 32, but the presser-plate is still held out of contact withthe paper tubing by means of the inclined plane 31 until the carriage22'has begun its forward stroke. As that stroke eontinues,the-roller 30is gradually released from that inclined plane, and the spring 27 andits mate are thus allowed to pull the presser-plate down upon the papertubing, and thus to clasp it to the top of the carriage. This occurs atthe moment of time when the forward end of the paper tubing reaches itsmost advanced position upon the carriage, and

when a bag-length is severed therefrom by the cutting-rolls. As thecarriage proceeds still farther forward, the upper end of the dog 46collides with the hook end of thehook-spring 48, and thus forces theshaft 45 to oscillate. That oscillation operates, through the camgrooveson the peripheries of the cams 45 and 45, respectively, to work thegrippers 44 and 44, thus forcing them to clasp the lower folds of thetucked-paper tubing down upon the top of the carriage, as shown in Figs.7, 8, 9, and 10. Then the cam-groove 42 so operates upon the arms 36 and37, and thus upon the rods 39 and 40 as, in connection with the forwardmovement of the carriage, to raise the heads 43 and 43" and theirappurtenancesup= ward upon the ends of the arms 54 and 54',respectively, and to carry them over from the position shown in Fig. 1to that shown in Fig. 6, through the intermediate position shown in Fig.5. The operation of the head 43 andits appurtenances duringthis movementofthe two contrivances is the same as that of the head 43 and itsappurtenances, and therefore we will describe the operation of thelatteronlv, i

When the roller 52 is lifted by the movement of the arm 54 from the rail53, the spring 50 brings the extremity of the gripper 49 into theadjacent tuck :of' the paper tube, and thus causes that gripper to claspthe upper fold of that tuck at the place indicated by the letter binFig. 7, between the point of the gripper The box-1ike form of Fig. 7 isthus made and n5 maintained by the grippers 44 and 44 clasping the lowerfolds of the tuck of the'paper tubing just below the forward wall of thebox-like form, and by the grippers 49 and 49 clasping the upper foldsjust above the rear border of the bottom of the box-like form. Thus thebottom of the box-like form has its forward border defined by theforward and beveled side or edge of the upper projections of thegrippers 44 and 44, while its rear border .is defined by the rearextremities of the grippers 49 and 49- pressing nearly horizontallyagainst the beveled angle of the head 43, as shown in Figs. 9 and 10.This permits the corners of the box-like form to stand substantiallyvertical. Thereupon the lower end of the dog 46 collides with the hook47 and thus causes the shaft 45 to oscillate, and by oscil- ,lating toremove the grippers 44 and 44 from their hold upon the paper, and at thesame time the roller 30 is forced downward by the inclined plane 31, andin turn forces the arm 29 to oscillate the shaft 28 and thus to raisethe presser-plate from the paper blank, and at the same time the rollers52 and 52 strike upon the rails 53 and 53, respectively, and thus removethe grippers 49 and 49 from all contact with the completed paper blank;or, if desired, the raising of the presser-plate and the removal of thegrippers may be postponed until the box-like blank has been folded downto a diamond shape by mechanism not shown in the present application,but operating during the latter part of the forward movement of thecarriage. \Vhen the carriage begins its backward stroke, the rollerpasses under the cam 32, which cam,having been forced downward by theroller during the forward movement of the carriage, is now forced upwardby the spring 35 and prevents the return of the roller otherwise thanbelow the cam. The backward stroke of the carriage, in connection wit-hthe cam 42, operates to return the arms 54 and 54, and their respectiveappurtenances from the position shown in Fig.6 to that shown in Fig. 1,and thus prepares those mechanisms for a repetition of their formerwork. During the same backward stroke, also, the backward surface of theupper end of the dog 46 comes in contact with the forward surface of thehookspring 48, but the dog is carried under the hook without beingoscillated thereby, such oscillation being prevented by the action ofthe springs, which press against the inner angular projections of thelever-grippers 44 and 44, respectively, through the presserbolts 44 and44, respectively. These angular projections being at that time above theplane of the fulcrums of the lever-grippers,the springs 44 and 44 aresufficient to prevent the oscillation of the grippers, and the rockingof the shaft 45 by so slighta cause as the contact of the beveled orrounded backward surface of the upper end of the dog 46 with the roundedor beveled forward surface of the hook 48.

We do not herein claim the combination of two fingers and a spring, thatcombination being claimed in claim 1 of our application No. 156,866, forLetters Patent of the United States of America,-executed on the same dayand filed on the same day with this specification.

We claim as our invention- 1. The combination of the carriage 22, thepresser-plate 25, having the arms 26 and 26', the shaft 28, having thearm 29, the fixed inclined planes 31 and 31, and the cam 32, worked bythe spring 35, all operating together substantially as described.

2. The combination of the carriage 22, the gripper 44, the cam 45, thedog 46, keyed to the shaft 45, and the hook-springs 47 and 48, adaptedto oscillate that dog, all operating together substantially asdescribed.

3. The combination of the head 43, attached to the end of the rod 39,the gripper 49, the spring 50, and the rail 53, all operating togethersubstantially as described.

4. The combination of the carriage 22, the presser-plate 25, thegrippers 44 and 44, the heads 43 and 43, and the grippers 49 and 49, alloperating together substantially as described.

5. The combination of the head 43, the gripper 49, and the arm 54, alloperating to clasp the upper fold of the adjacent tuck of the papertubing at the place b, and to carry it over from the position shown inFig. 8 through that shown in Fig. 9 to that shown in Fig. 10, all

substantially as described.

WILLIAM A. LORENZ. -WILLIAM H. HONISS. Witnesses:

ALBERT H. WALKER, FRANK A. PIERPONT.

